Interview question – place and route

[bx14zz]

Hi,

Friends, I am new to this area and I have a question for you.

If I will receive a full place and route (after routing and all the procedures) design :

1) How do I know which layers any macro in my design used?

2) If I would ask this question before the place and route procedure begin how the answer to question no 1 would have changed?

Thank,

Tsahi

 

[natg9]

My friend i think this information is available in the LEF (Technology file ) before u start
and after u finish u can dump out a DEF which can also have this info

PLease anybody correct me if i am wrong


regards
natg

 

[raju3295]

hi natg9,
Lef contains information about the all available layers, but user can restrict to some of the layers only, i think the second option to dump out the DEF and can check about the max layer used.